EP2524752B1 - Support pour outil d'ébavurage - Google Patents

Support pour outil d'ébavurage Download PDF

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Publication number
EP2524752B1
EP2524752B1 EP12003768.4A EP12003768A EP2524752B1 EP 2524752 B1 EP2524752 B1 EP 2524752B1 EP 12003768 A EP12003768 A EP 12003768A EP 2524752 B1 EP2524752 B1 EP 2524752B1
Authority
EP
European Patent Office
Prior art keywords
deburring
tool holder
front part
spring elements
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12003768.4A
Other languages
German (de)
English (en)
Other versions
EP2524752A1 (fr
Inventor
Reinhold Born
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gbz Mannheim & Co KG GmbH
Original Assignee
Gbz Mannheim & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gbz Mannheim & Co KG GmbH filed Critical Gbz Mannheim & Co KG GmbH
Publication of EP2524752A1 publication Critical patent/EP2524752A1/fr
Application granted granted Critical
Publication of EP2524752B1 publication Critical patent/EP2524752B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/106—Bits for countersinking with a cutting edge adjustable along a direction oblique to the axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/08—Chucks holding tools yieldably
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2220/00—Details of turning, boring or drilling processes
    • B23B2220/08—Deburring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/136—Springs

Definitions

  • the invention relates to a deburring tool holder according to the preamble of claim 1.
  • a deburring tool holder is known from the DE 202 08 438 U1 known.
  • a deburring tool is used to remove burrs from bores.
  • One application is the deburring of holes in common rail systems.
  • the high-pressure fuel accumulator which is also referred to as a common rail, is made from a cylindrical metal body into which a longitudinal bore is made to form the interior for the fuel.
  • the outer surface of the body is provided with several radial holes for connecting the injection valves. This creates a burr in the interior of the high-pressure fuel reservoir at each radial bore, which must be removed.
  • Tools are used for deburring, which are first carried out through the respective radial bore and then remove the burr in the interior of the high-pressure fuel reservoir by means of a rotating deburring tool.
  • the deburring tools are preferably deburring knives.
  • the deburring knife must first yield radially inwards when immersed in the bore and then springs back radially outwards after passing through.
  • the edge of the deburring knife engages behind the edge of the hole and removes the burr in a rotating manner. Since this step is carried out when the feed direction is reversed, this step is also known as backward deburring.
  • the generic tool can in principle deburr both forward and backward.
  • the deburring tool is designed as a deburring knife.
  • the deburring tool is in one attached to the front part of a deburring tool holder.
  • the front part is pivotally mounted in a rear part, which is clamped in a machine tool.
  • the design tool When immersed in the hole, the design tool swivels around a pivot point.
  • the DE 694 23 041 T1 describes a deburring system in which a deburring tool designed as a deburring knife is pivotally mounted in a shaft with a longitudinal recess and can thus perform an evasive movement.
  • DE 103 33 194 B4 describes a deburring system which has a guide sleeve in which there is a base body which is provided with a knife groove.
  • the deburring tool designed as a deburring knife, swivels around a cross pin in the knife groove.
  • the US 2009/0304470 A1 also describes a deburring system in which a deburring knife is used as the deburring tool, which swivels around a fixed pivot point.
  • the pivotable suspension of the deburring knife means that the angular position of the cutting edge of the deburring knife and thus the geometry of the deburred hole edge change depending on the pivoting angle.
  • the DE 202 08438 U1 describes a device for deburring an eccentrically arranged bore.
  • the shaft of a deburring tool is arranged in the receiving bore of a ball.
  • three cup-shaped receptacles for a detent ball, each offset by 120 °, are introduced.
  • the locking balls are pressed into the receptacles with spiral compression springs.
  • the US 2 804 789 A describes a deburring tool with spiral springs that press a cutting edge against a workpiece.
  • the JP 60 131106 A describes a deburring tool that works with pressure cylinders.
  • the object of the invention is to provide a deburring tool holder with the features described at the outset, with which a reliable removal of a burr is ensured.
  • an evasive movement is to be made possible when immersed in a bore and, on the other hand, a sufficient contact pressure for deburring is to be generated after passing through the bore, wherein a uniform geometry of the deburred passage opening is to be ensured.
  • the deburring tool does not perform a swiveling movement about a fixed pivot point when deflecting and springing back, but rather a displacement in the radial direction to the axis of rotation. This is preferably a pure parallel shift. If a deburring knife is used as the deburring tool, the cutting edge of the deburring knife maintains its position relative to the axis of rotation. This ensures a constant deburring geometry of the hole opening.
  • the front part of the holder is held between at least two spring elements.
  • the deburring tool is attached to the front part of the holder and projects forward in the axial direction.
  • the Spring elements are arranged on two opposite sides of the fastening point.
  • the spring elements extend in the axial direction and are arranged parallel to the axis of rotation.
  • the spring elements preferably have a constant rectangular cross section and establish a connection between the front and the rear part. Since the rear part of the holder is firmly clamped, the upper and lower spring elements each form a spiral spring when the front part is displaced radially. Two spiral springs arranged parallel to each other are called parallel springs [ Dubbel, paperback for mechanical engineering, 22nd edition, 2007, page G50 ].
  • the front part By arranging the front part between a parallel spring, a radial parallel displacement of the front to the rear part is made possible. If a deburring knife is used as a deburring tool, the angular position of the cutting edge of the deburring knife is maintained relative to the axis of rotation.
  • a multiply curved strip is arranged above and below the fastening point of the deburring tool.
  • the bend creates plate-like spring elements that are connected to each other with arches and form a suspension.
  • the individual spring elements of each suspension are aligned parallel to each other and can move in concertina fashion in the radial direction.
  • the strips from which the suspensions are formed preferably consist of spring steel.
  • the front part of the deburring tool holder is held between these spring-loaded elements. They allow a radial parallel displacement of the front part to the firmly clamped rear part. With this construction too, the angular position of the deburring tool becomes relative maintain to the axis of rotation, so that a constant cutting geometry is guaranteed even with different radial deflections.
  • the deburring tool holder is formed in one piece.
  • the rear part, the front part and the spring elements are made from one piece of material.
  • the piece of material preferably consists of a plastic.
  • plastics made of a polyvinyl chloride (PVC), a polycarbonate (PC) or a polyamide, in particular a polycaprolactam (PA 6), are suitable.
  • the deburring tool is connected to the front part of the deburring tool holder at a fastening point. At the attachment point, a hole can be made in the front part, into which the deburring tool is inserted and fixed in its desired position by means of a locking screw.
  • the front end of the deburring tool for example the cutting edge of a deburring knife, must be pressed against the edge of the bore with sufficient contact pressure.
  • the attachment point is arranged eccentrically to the axis of rotation.
  • the deburring tool also extends eccentrically to the axis of rotation in the axial direction. The more the eccentricity is pronounced, the more the deburring tool springs back radially outwards after passing through the bore and the higher the contact pressure with which the front end of the deburring tool is in contact with the material.
  • the required contact pressure depends, among other things, on the material to be processed. It is desirable to be able to vary the contact pressure. Therefore, the radial position of the front part can be changed in the invention.
  • the radial position is changed along a linear guide line.
  • a sliding guide is particularly suitable, preferably in the form of a dovetail guide or T-slot guide.
  • the front part is complete with a rotatable adjusting element the spring elements radially to the axis of rotation in its position along the sliding guide.
  • the radial position of the front part is changed by rotating an adjustment element in or out, which presses on the front part via a force transmission element and thereby changing its position radially to the axis of rotation.
  • the force transmission element is preferably a compression spring, which can be designed, for example, as a spiral spring or as a package of disc springs.
  • the spring force is varied by turning an adjusting screw.
  • the invention further comprises a deburring system according to claim 9.
  • the deburring tool is designed as a deburring knife, the deburring knife comprising a cutter holder, at the front end of which a cutting edge is arranged.
  • the cutter holder and the deburring tool holder are formed in one piece. With the one-piece design, complex fits of the parts connected to a deburring system are eliminated.
  • the Figures 1 a and 1b show a deburring system that is clamped in a machine tool.
  • the deburring system comprises a deburring tool 1 and a deburring tool holder 2.
  • the deburring tool 1 is fastened in the deburring tool holder 2.
  • the deburring tool 1 is designed as a deburring knife.
  • the deburring tool 1 designed as a deburring knife comprises in Embodiment a cylindrical, rod-like cutter holder 25 at the front end of a cutting edge 14 is arranged.
  • the deburring tool holder 2 is positioned in a collet 3 and is fixed in a tool holder 5 with a clamping nut 4.
  • the deburring system rotates about an axis of rotation 6.
  • the deburring tool holder 2 is surrounded by a sleeve 24. A liquid is passed through the gap between the sleeve 24 and the deburring tool holder 2, which serves as a flushing and cooling agent.
  • a deburring tool holder 2 is shown.
  • the deburring tool holder 2 has a front part 7 for fastening the deburring tool 1 and a rear part 8 for clamping in the tool holder 5 of a machine tool.
  • the deburring tool 1 is positioned at a fastening point 9 of the front part 7 and fixed with a locking screw which is screwed into an opening 10.
  • the attachment point 9 is arranged eccentrically to the axis of rotation 6. The stronger the eccentricity E, the higher the restoring force of the deburring tool 1 when penetrating into the bore and consequently the pressing force during deburring.
  • the rear part 8 of the deburring tool holder 2 comprises a cylindrical shaft 11, to which a cuboid area 12 adjoins.
  • the front part 7 is held between two spring elements 13.
  • the spring elements 13 connect the front part 7 to the rear part 8 of the deburring tool holder 2.
  • the deburring tool holder 2 is integrally formed.
  • the front part 7, the rear part 8 and the spring elements 13 are made from a piece of material, preferably a plastic.
  • the spring elements 13 have a constant rectangular cross section and extend in the axial direction parallel to the axis of rotation 6.
  • the spring elements 13 allow a radial displacement of the front part 7 to the rear part 8. Since the rear part 8 is firmly clamped via its shaft 11, the radial part shift of the front part 7 both spring elements 13 claimed to bend.
  • Two spiral springs aligned parallel to each other are called parallel springs.
  • the deburring tool 1 is designed as a deburring knife.
  • the deburring knife maintains its axial alignment parallel to the axis of rotation.
  • the cutting edge 14 of the deburring knife also maintains its angular position relative to the axis of rotation 6.
  • the Figures 3 a and 3b show an alternative embodiment of the invention.
  • the front part 7 of the deburring tool holder 2 is held between spring elements 13, which are formed by bending a strip of spring steel, so that the individual spring elements 13 are connected to one another by arches 15 to form a suspension.
  • spring elements 13 which are formed by bending a strip of spring steel, so that the individual spring elements 13 are connected to one another by arches 15 to form a suspension.
  • a suspension with three parallel plate-like rectangular spring elements 13 is arranged in each case. This enables a parallel displacement of the front part 7 radially to the axis of rotation 6.
  • the rear part 8 of the in the Figures 3 a and 3 b shown deburring tool holder 2 consists of a cylindrical shaft 11 for clamping in a machine tool, to which an area 12 is formed in the form of a cuboid body.
  • the deburring tool holder 2 shown in this exemplary embodiment is designed in several parts.
  • the front part 7 is connected to the rear part 8 via the two outer spring elements 13. These are the ones in the Figures 3 a and 3 b illustrated embodiment welded to two opposite sides of the cuboid region 12.
  • Fig. 4 shows a deburring system in which the front part 7 of the deburring tool holder 2 is adjustable in its radial position.
  • the adjusting arrangement 16 consists of a rotatable adjusting element 17. In the exemplary embodiment, an adjusting screw is used for this.
  • a force transmission element 18 is arranged between the adjusting element 17 and the front part 7, which in the exemplary embodiment is designed as a compression spring in the form of a spiral spring.
  • the radial position of the front part 7 changes.
  • the degree of eccentricity E can be varied. The further the adjusting element 17 is screwed in, the stronger the eccentricity E.
  • FIGS. 5 a and 5 b show an alternative connection possibility of the front part 7 with the rear part 8.
  • the two connecting spring elements 13 are fastened with the aid of a holding element 19 on two opposite sides of the cuboid area 12.
  • a U-profile is used as the holding element 19, which encloses two of the spring elements 13 and is fixed by means of two screws 20 to the cuboid area 12 of the rear part 8.
  • FIG. 6 a and 6 b is a one-piece design of a deburring tool holder 2 is shown, in which the front part 7 is held between spring elements 13.
  • spring elements 13 are arranged above and below the front part 7, which are connected via arches 15 to form a suspension.
  • the exterior of the spring elements 13 merge into the cuboid area 12 of the rear part 8.
  • the shaft 11 is molded onto the cuboid region 12.
  • the entire deburring tool holder 2, that is to say the front part 7, the rear part 8 and the spring elements 13, are made from one piece of material.
  • the Figures 7a , 7b , 7c and 7d show an alternative way to change the eccentricity.
  • the front part 7 together with its spring elements 13 can be displaced along a linear guide line.
  • This is preferably a sliding guide.
  • Fig. 7c shows that the sliding guide in the exemplary embodiment is designed as a dovetail guide.
  • the sliding guide could also be designed as a T-slot guide.
  • the front part 7 is held between two spring elements 13.
  • the spring elements 13 connect the front part 7 to a displacement element 21.
  • the two spring elements 13 open into the displacement element 21; at the other end the sliding element 21 is dovetail-shaped.
  • the cuboid area 12 of the rear part 8 points in accordance with Fig. 7c a dovetail-shaped groove in which the displacement element 21 is placed.
  • a rotatable adjusting element 22 By means of a rotatable adjusting element 22, the displacement element 21 is displaced in the radial direction along a linear guide line in the groove.
  • the adjusting element 22 is an adjusting screw. With a view to Figure 7 a, the displacement element 21 is moved up or down in its position.
  • the displacement element 21 is locked in the desired radial position by means of a fixing element 23.
  • a clamping wedge with screw is used as the fixing element 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)

Claims (11)

  1. Support pour outil d'ébavurage (2) comprenant une partie avant (7) pour la fixation d'un outil d'ébavurage (1) et une partie arrière (8) pour le serrage dans une machine-outil, la partie avant (7) étant disposée entre au moins deux éléments de ressort (13),
    la partie avant (7) étant retenue entre au moins deux éléments de ressort (13),
    caractérisé en ce que
    les éléments de ressort (13) établissent une liaison entre la partie avant (7) et la partie arrière (8) pour permettre un déplacement radial de la partie avant (7) par rapport à la partie arrière (8),
    soit le point de fixation (9) pour l'outil d'ébavurage (1) étant disposé de manière excentrée par rapport à l'axe de rotation (6), soit la position radiale de la partie avant (7) pouvant être variée au moyen d'un élément de réglage rotatif (17) et/ou d'un élément d'ajustement rotatif (22).
  2. Support pour outil d'ébavurage selon la revendication 1, caractérisé en ce que les éléments de ressort (13) sont disposés parallèlement à l'axe de rotation (6).
  3. Support pour outil d'ébavurage selon la revendication 1 ou 2, caractérisé en ce que les éléments de ressort (13) présentent une section transversale rectangulaire constante.
  4. Support pour outil d'ébavurage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la partie avant (7) est retenue entre un ressort parallèle.
  5. Support pour outil d'ébavurage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que des éléments de ressort (13) sont connectés les uns aux autres par des arcs (15) pour former une suspension, la partie avant (7) étant retenue entre au moins deux suspensions.
  6. Support pour outil d'ébavurage selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le support pour outil d'ébavurage (2) est réalisé d'une seule pièce.
  7. Support pour outil d'ébavurage selon la revendication 1, caractérisé en ce que la variation de la position radiale s'effectue par déplacement le long d'une ligne de guidage linéaire.
  8. Support pour outil d'ébavurage selon la revendication 7, caractérisé en ce que le déplacement s'effectue le long d'un guide coulissant.
  9. Système d'ébavurage comprenant un outil d'ébavurage (1) qui est fixé à un support pour outil d'ébavurage (2) selon l'une quelconque des revendications 1 à 8.
  10. Système d'ébavurage selon la revendication 9, caractérisé en ce que l'outil d'ébavurage (1) est réalisé sous forme de lame d'ébavurage, la lame d'ébavurage comprenant un support de coupe (25) à l'extrémité avant duquel est disposée une arête de coupe (14).
  11. Système d'ébavurage selon la revendication 10, caractérisé en ce que le support de coupe (25) et le support pour outil d'ébavurage (2) sont réalisés d'une seule pièce.
EP12003768.4A 2011-05-16 2012-05-11 Support pour outil d'ébavurage Active EP2524752B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202011100749U DE202011100749U1 (de) 2011-05-16 2011-05-16 Entgratwerkzeughalter

Publications (2)

Publication Number Publication Date
EP2524752A1 EP2524752A1 (fr) 2012-11-21
EP2524752B1 true EP2524752B1 (fr) 2020-03-18

Family

ID=44502188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12003768.4A Active EP2524752B1 (fr) 2011-05-16 2012-05-11 Support pour outil d'ébavurage

Country Status (4)

Country Link
EP (1) EP2524752B1 (fr)
DE (1) DE202011100749U1 (fr)
ES (1) ES2795408T3 (fr)
HU (1) HUE051956T2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012104392A1 (de) 2012-05-22 2013-11-28 Karl-Heinz Holler Werkzeughalter für ein Werkzeug zum Entgraten und Anfasen
CN103537764B (zh) * 2013-10-17 2015-08-19 浙江大学台州研究院 旋转刮削刀具
FR3020000B1 (fr) * 2014-04-17 2016-12-02 Seco Tools Ab Connexion flottante pour outil
DE102017111736A1 (de) * 2017-05-30 2018-12-06 Adalbert Mattes Entgratungswerkzeug für Radialbohrungen und hierfür passender Schneidkörper

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2422906A1 (fr) * 2010-08-26 2012-02-29 WSEngineering GmbH & Co. KG Support d'outil doté d'un mécanisme d'évitement et son procédé de fabrication

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GB613788A (en) * 1946-07-03 1948-12-02 Weyburn Engineering Company Lt Improvements relating to couplings
US2804789A (en) * 1956-07-11 1957-09-03 Guy S Randles Chatterless countersink and deburring tool
JPS60131106A (ja) * 1983-12-21 1985-07-12 Taihei Kogyo Kk 自動バリ取り装置
SU1281347A1 (ru) * 1985-05-22 1987-01-07 Предприятие П/Я А-7885 Патрон дл метчика
US5501554A (en) 1993-12-09 1996-03-26 E-Z Burr Tool Company Deburring tool
DE20208438U1 (de) * 2002-05-31 2003-10-16 Wincor Nixdorf Int Gmbh Einrichtung zum Entgraten einer exzentrisch angeordneten Bohrung in einem Drehteil
DE10333194B4 (de) 2003-07-22 2009-08-06 Heule, Ulf Entgratwerkzeug mit Messerschnellwechsler
ITMO20030310A1 (it) * 2003-11-19 2005-05-20 I M S N C Di Ivano Monduzzi E C Ora I M S R Pinza per montaggio di utensili alesatori.
DE10354474B4 (de) * 2003-11-21 2006-09-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Werkzeughalterung mit kraftgesteuertem Ausweichmechanismus
DE10357404B4 (de) 2003-12-09 2007-02-01 Adalbert Mattes Entgratungswerkzeug für Radialbohrungen
DE102004008871B3 (de) * 2004-02-18 2005-12-01 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG Räumwerkzeug und Verfahren zur spanenden Bearbeitung von Bohrungsoberflächen
US7730813B2 (en) * 2004-07-08 2010-06-08 University Of Florida Research Foundation, Inc. Variable tuned holder for machine tools
US8292553B2 (en) 2008-06-06 2012-10-23 E-Z Burr Tool Company Deburring tool and cutting insert

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2422906A1 (fr) * 2010-08-26 2012-02-29 WSEngineering GmbH & Co. KG Support d'outil doté d'un mécanisme d'évitement et son procédé de fabrication

Also Published As

Publication number Publication date
DE202011100749U1 (de) 2011-07-13
ES2795408T3 (es) 2020-11-23
HUE051956T2 (hu) 2021-03-29
EP2524752A1 (fr) 2012-11-21

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